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  1. Hadoop Map/Reduce
  2. MAPREDUCE-6334

Fetcher#copyMapOutput is leaking usedMemory upon IOException during InMemoryMapOutput shuffle handler

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Details

    • Bug
    • Status: Closed
    • Blocker
    • Resolution: Fixed
    • 2.7.0
    • 2.8.0, 2.7.1, 2.6.2, 3.0.0-alpha1
    • None
    • None
    • Reviewed

    Description

      We are seeing this happen when

      • an NM's disk goes bad during the creation of map output(s)
      • the reducer's fetcher can read the shuffle header and reserve the memory
      • but gets an IOException when trying to shuffle for InMemoryMapOutput
      • shuffle fetch retry is enabled

      Attachments

        1. MAPREDUCE-6334.001.patch
          4 kB
          Eric Payne
        2. MAPREDUCE-6334.002.patch
          4 kB
          Eric Payne

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            epayne Eric Payne
            epayne Eric Payne
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              Updated:
              Resolved:

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